b'90MauritiusEx 628628C PC POSTAL HISTORY:1935 Covers (2) and a real-photo postcard posted during the visit of the Dutch Submarine \'K XVIII\' whilst on its world tour from Holland to Java (during which it visited Tristan da Cunha, South Africa, Mauritius and Fremantle), one cover carried from the island by the submarine. The group comprises cover to Holland with an illustration of the submarine on the flap and "Built by Wilton-Fijenoord Rotterdam, Hr. Ms. Onderzeeboot K XVIII" posted at Port Louis (May 31) franked with Mauritius 20c Silver Jubilee; picture postcard of the submarine with handstamped message of thanks from the Captain posted from Port Louis (May 30) to Holland franked with Mauritius KGV 10c; and a cover with "Government House Mauritius" on flap addressed to "Lady Jackson, Fremantle, Australia" franked with Mauritius 5c Jubilee cancelled by the "NEDERLANDSCHE MARINE" cachet of the submarine, endorsed "Per Sub K XVIII" and carried by the submarine to Soerabaja where it was posted with Netherland Indies 35c franking for registered letter rate to Australia, subsequently handstamped "UNCLAIMED" and "NOT KNOWN BY LETTER CARRIER" (backstamped at Fremantle) returned to Soerabaja then redirected to Holland. Accompanied by notes about the voyage and latter cover. An exceptional trio, the last cover likely unique. (3 items) $3,5004,500Netherlands629** * O 1906-1980s array on mostly sets on stockcards housed in photograph album, few 1940s used sets, strength however in 1960s-80s sets mint or used with high proportion of the mint 1970s-80s sets being MUH; generally fine. (100s) .$160220New Guinea & N.W.P.I.Ex 630 631630* 1925-27 (SG.125-136) Huts d to 1 set including a 6d shade, 9d with thin, key 10/- & 1 values are fine, Cat. 400. (14) .$260300'